Improvement in devices for lowering and hoisting earthen tubes in bored wells



1. HOOVER; Device for Lowering and Hoisting Earthen Tubes in I BoredWells.

No. 222,734.. Patented Dec. 23, 1879;

W WEEEEE I E TU' \flmc WW N. PEI'ERS. PHOTO-LITHQGRAPAER. WASHINGTON n cwith.

UNITED STATES PATENT OFFICE.

ISAAC HOOVER, OF WEBSTER, OHIO.

IMPROVEM'ENT IN DEVICES FOR LOWERING AND HOISTING EARTHEN TUBES lN BOREDWELLS.

Specification forming part of Letters Patent No. 222,784, dated December23, 1879 application filed March 31, 1879.

. To all whom it may concern:

Be it known that I, ISAAC Hoovnn, of Web. ster, in the county of Darkeand State of Ohio, have invented a new and useful Improvement in Devicesfor Lowering and Hoisting Earthen Tubes in Bored Wells, of which thefollowing is a specification.

The accompanying drawing is a side view of the device for lowering andelevating earthen tubes in bored wells.

A represents the frame, constructed of iron, the side bars of which areconnected by three cross-pieces. The upper ends of the side bars arecurved inward, so as not to engage the walls of the well as the deviceis being withdrawn.

The upper cross-pieces have mortises that support the bar B, and thelower cross-piece is slotted for the reception of two of the bent leversF, which are supported on pins for their fulcrums. At aright angle tothis cross-piece are projections, which in a similar manner support theremaining two levers.

To the under part of the lower crosspiece is attached the guide J, whichconsists of four arms, one or two of which may be dispensed At the upperend of the bar B is attached a ring, to which the hoisting-rope isattached, and at the lower end is attached the ring G,

- to which the several chains H are attached,

these chains being connected to the upper ends of the levers, andthrough which the said levers are operated.

The bar moving freely within its mortises, its upward movement isarrested by its attachment to the levers, and the downward movement isarrested by the projection E coming in contact with the cross-piece.When the bar drops sufficiently low the pivotal arms C fall beneath theprojections D, and thereby the levers are released of their load and thedevice is withdrawn.

The operation is described thus: The earthen tube is placed on thedevice, the rope to operate the device is attached to a pulley overhead,and as the rope is made taut the levers are thrust out and engage thetube, which is then hoisted directly over the bore of the well, and thenlowered into the same. When the bottom is reached the bar descends, andthe arms 0 engage the projections, thus releasing the tube, and thedevice is then elevated to be reloaded.

To remove tubingfrom a well, the device is lowered, with the armsengaging the projections. Now, with a suitable rope, the arms are drawnup, and as the rope is made taut the levers are thrust out, thusengaging the tubing, which is thereby hoisted to the surface.

I am aware that such is the state of the art in tube-clamps that onlythe curved levers supported on cross-pieces at the base of the frame, incombination with such other known parts as make my invention operative,are all that I can claim as my invention.

What I claim as my invention, and desire to secure by Letters Patent,is-

The curved levers F, supported in crosspieces at the base of frame A, incombination with bar B, arms C, and chains H, substantially as setforth.

ISAAC HOOVER.

